Q: ln the examples I am talking of the person continues to behave in what most people would agree is a normal manner. とはどういう意味ですか?
A: It means that the person(in example) was acting normally
Q: ln reality you're simply just comfortable in your skin. とはどういう意味ですか?
A: QAの全文をご確認ください
Q: ln we go とはどういう意味ですか?
A: It's said right before someone starts something, and is more colloquial speech. It means "we're about to start!" It's very similar to "let's dive in". Literally speaking, it would be someone describing one's self or a group as about to go into a new room/place/area, e.g. an explorer about to open a door, a cop going into a house, etc.


Q: ln my mind と on my mind はどう違いますか?
A: In my mind = literally thinking about something; it’s saying what’s in your head, your brain

Example: “In my mind, I had pictured something very differently about her.”

On my mind = something about what the speaker has been thinking about a lot lately, usually about what the speaker is worried about

Example 2: “My boyfriend leaving me for another woman has been on my mind lately.”

Example 3: “Sorry for acting weird, it’s just that there’s been a lot on my mind lately...”


Q: ln Korea,Where is the most popular? は 英語 (アメリカ) で何と言いますか?
A: "Where is the most popular place in Korea?"
Q: ln Dino は 英語 (イギリス) で何と言いますか?
A: QAの全文をご確認ください
Q: ln front of gate は 英語 (イギリス) で何と言いますか?
A: QAの全文をご確認ください


Q: ln the line11,
why he couldn't be touched
in spite of he said"it was tough"?
A: I'm guessing you're confused as to what they meant?

If so, they mean that even though the girl spitted on him, he knows that she could never truly hurt him. That no one could.
Q: ln line 17, what does"it"refer to?
A: How It had affected him = how hearing the two famous phrases affected him
Q: ln line 23, what is the mean of the phrase"go out for a milkshake"?
A: Exactly what it says. They had gone to buy a milshake.
Q: ln the line 29, what does"that"refer to?
A: "He seemed to be making an effort to take a personal interest in (the fact that we were his passengers)"

That's how I would read it, at least.
Q: ln line 10,
what is the mean of the phrase
"have no business"?

A: It means it isn't for you. It has nothing to do with you, so you shouldn't get involved.

The phrase is pretty common.

If someone asks about your sex life, for example, it's fair to say 'That's none of your business'.

Or if a kid is in a room they shouldn't be in, parents might say 'You have no business being in here, get out.'